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A phylogenetic study of Micarea melaeniza and similar-looking species (Pilocarpaceae) unveils hidden diversity and clarifies species boundaries and reproduction modes

by: Kantelinen, Annina; Svensson, Måns; Malíček, Jiří; Vondrák, Jan; Thor, Göran; Palice, Zdeněk; Svoboda, Stanislav; Myllys, Leena

Publication date: 2024-7-5
Usage: Attribution 4.0 International
Topics: Biodiversity, DNA-barcoding, lichenized ascomycete, new species, overlooked taxa, reproduction mode
Publisher: Pensoft Publishers
Collection: biodiversity
Contributor: Pensoft Publishers
Language: English
Rights: https://biodiversitylibrary.org/permissions
Rights-holder: Copyright held by individual article author(s).
Volume: 106
Item Size: 32.4M

Abstract: Micarea (Ascomycota, Pilocarpaceae) is a large cosmopolitan genus of crustose lichens. We investigated molecular systematics and taxonomy of the poorly known Micarea melaeniza group focussing on M. melaeniza, M. nigella and M. osloensis. A total of 54 new sequences were generated and using Bayesian and maximum likelihood analysis of two markers (nuITS and mtSSU), we discovered two previously unrecognized phylogenetic lineages, one of which is described here as Micarea eurasiatica Kantelinen & G. Thor, sp. nov., morphologically characterized by pycnidia that are sessile to emergent, cylindrically shaped, with greenish-black K+ olive green, wall pigmentation and containing large mesoconidia up to 6 µm in length. The species is known from Japan and Finland. In addition, we show that the reproduction biology of M. osloensis has been poorly understood and that the species often occurs as an anamorph with stipitate pycnidia. We present a species synopsis and notes on pigments. Our research supports previous results of asexuality being an important reproductive strategy of species growing on dead wood.
Addeddate: 2025-04-29 16:19:09
Bhl_virtual_titleid: 210915
Bhl_virtual_volume: v.106 (2024)
Call number: 10_3897_mycokeys_106_123484
Call-number: 10_3897_mycokeys_106_123484
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Genre: article
Identifier: phylogeneticstu106kant
Identifier-ark: ark:/13960/s2r376gjkdh
Identifier-bib: 10_3897_mycokeys_106_123484
Identifier-doi: 10.3897/mycokeys.106.123484
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Page_range: 327-354
Pages: 28
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Possible copyright status: In copyright. Digitized with the permission of the rights holder.
Ppi: 300
Source: MycoKeys 106
Year: 2024